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Configuration Management and RCS

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Configuration Management and RCS. CPS470 Fall 1999. Configuration Management ... RCS provides simple version control with simple configuration identification. ... – PowerPoint PPT presentation

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Title: Configuration Management and RCS


1
Configuration Management and RCS
  • CPS470 Fall 1999

2
Configuration Management
  • Managing a large development system is a
    difficult task, any tool that makes the job
    easier is welcome.
  • Software CM is a discipline for controlling the
    evolution of software systems.
  • The goals of using CM are to ensure the integrity
    of a product and to make its evolution more
    manageable.

3
Revision Control System (RCS)
  • RCS provides simple version control with simple
    configuration identification.
  • RCS is file oriented, controls the revisions of
    file.
  • It provides file level locking mechanism.
  • Consists of a set of tools built into UNIX
    system ci, co, rlog, rcs etc.

4
Tools of RCS
  • ci check in RCS file revision
  • co check out RCS file revision
  • rcs Change RCS file attributes
  • rlog Print log messages and other information
    about RCS.

5
ci
  • Stores new revisions into RCS files.
  • For each revision deposited, ci prompts for a log
    message.
  • If RCS file does not exist, ci creates it and
    deposits the working file as the initial
    revision.
  • ci -l option Checks in the file, locks it and
    checks it out again.
  • ci -u option same as -l option, but deposited
    version is not locked.

6
co
  • Retrieves a revision from an RCS file and stores
    it into the corresponding working file.
  • Revisions of an RCS file may be checked out
    locked or unlocked, with -l or -u options
    respectively.
  • A revision is selected by options for revision or
    branch number, check-in date/time, etc.

7
rcs
  • Creates new RCS files files or changes attributes
    of existing ones.
  • -nnamerev Associate the symbolic name name
    with the branch or revision rev.
  • -lrev Lock the revision number rev.
  • -urev Unlock the revision number rev.

8
rlog
  • Prints information about RCS files.
  • Information RCS pathname, working pathname,
    head, default branch, accesslist, locks, symbolic
    names, total number of revisions, descriptive
    text, etc.

9
Terminology
test.c,v
RCS
README,v
test.c
Project
README
  • RCS subdirectory To be created under the
    directory
  • where revision control has to be performed.
  • Revision number a number in the form of d.d.d.d
    assigned
  • to a revision of a file.

10
How to start
  • Create an RCS sub-directory under the directory
    where you want to perform revision control.
  • Check in relevant files.
  • Check out working files for various uses.
  • Show the revision history of a working file.
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